Maxibright Daylight 315W CDM Horizon Reflector Kit

Maxibright Daylight 315W CDM Horizon Reflector Kit

A Ceramic Metal Halide kit with the Maxibright Horizon reflector — wide-angle and open-sided, specifically designed to throw light outwards rather than straight down. Ideal as a supplementary light between two HPS fixtures, adding the CMH's broader spectrum (especially UV-A) to maximise terpene and resin production.

Why growers choose the Daylight 315W CDM Horizon:

• 315W CMH lamp — broader, more natural spectrum than HPS, strong UV-A content for resin and terpene development
• Wide-angle Horizon reflector — throws light sideways across the canopy rather than concentrating it straight down
• Perfect supplementary fixture — sits between HPS lights to fill spectral gaps and even out canopy coverage
• Open-sided reflector design — dissipates heat naturally, runs cooler than closed CMH reflectors
• Fixed ballast-to-reflector design — no loose cables between components, tidy installation
• Complete kit — reflector, ballast, lamp, hangers all included

Who it's not for:

As a standalone light for full flowering, a 315W CMH is underpowered for anything larger than 1 x 1m — this is best used as a supplementary or chequerboard fixture. The Horizon's wide spread is intentional but means less vertical penetration; if you need deep canopy light, go for a narrower CMH reflector or step up to HPS/LED at higher wattage.

See it running in our Stone shop. Drop by Unit 24, Emerald Way, Stone Business Park (ST15 0SR) to see this fixture set up, or call us on 01785 556355 (Mon–Fri, 10am–5pm) to talk through whether it's the right choice for your tent size and grow style. In stock now with 24hr UK dispatch, or choose click & collect at checkout.